Boosting Air Power: 12v Thumper Max II Compressor with Custom Copper Outlet

[@LockyourHubs4WDing]

Do you think the head porting will make all the difference to the Thumper Max II's performance?

[@simonchello88]

good to see science used to justify decisions . This guys deserves way more followers.

[@LockyourHubs4WDing]

I agree! 😁

[@paulvictor9368]

I think you are an undercover genius. Your general knowledge of anything electrical and mechanical is very impressive!

[@LockyourHubs4WDing]

Thanks mate, I'm just a humble tinkerer..... Credit should go to the long suffering GLW who has had to put up with me pulling things apart about 30 seconds after I pull it out of the box!

[@MiniLuv-1984]

I guess, flow is flow regardless of whether its a ICE or a compressor. Speaking of flow, the flow of info is a little painful when one has to wait for the porting video! :) Nit picking rant over, the step by step instructions are really appreciated.

[@LockyourHubs4WDing]

The next episode is almost finished! It'll be published for everyone on KZbin next Sunday.

[@HardstylePete]

This series is great because I have one of these compressors and will be modifying it.

[@LockyourHubs4WDing]

Hope it helps mate!

[@thomaslincoln401]

Love the vids, thanks for taking the time and effort to add in the explanatory graphics and demos!

[@LockyourHubs4WDing]

Glad you like them!

[@LimestoneCoastCustoms]

Geez, I knew this was going to escalate !! 🤣🤣

[@LockyourHubs4WDing]

Hahah, just wait for the next installment!

[@luke9299]

When I did mine I opened up the intake ports in the head as well, I also cut a hole in the cap seems to have helped

[@LockyourHubs4WDing]

In the cap?

[@dominicwhite1450]

This was fantastically done - here's to hoping you decide to do the same with a Tozalazz before I get around to it 😅

[@LockyourHubs4WDing]

I hadn't even heard of the Tozalazz!

[@evil17]

Good job Simon, interesting to see how the porting effects it’s output. I like the way you analyse things. Do have to wonder with all this extra work, bits & pieces & cost, are we better to look at something engineered better in the first place & do the old, ’Pay once cry once’. Also, would it be right to suggest that a higher flow may come with an overall lower pressure tradeoff? Meaning that while it may pump up 4wd tyres better to 40 psi, it may struggle to pump up a truck tyre to 100 psi.

[@LockyourHubs4WDing]

There's always going to be a point of reaching diminishing returns. And it'll be dependent on the individuals valuation of their time and ability to work with their hands. I've deliberately not used any machine tools (lathe/mill) etc, nothing more fancy that a pedestal drill, as I wanted to keep the build realistic and accessible to the average 4wder with a few tools in the shed. You're right that the pump can be designed for a specific application. Just like an IC engine, it can be set up for low down grunt, or conversely top end. And attributes like reed thickness (that'll change valve timing) rpm, bore and stroke ratio etc will determine the characteristics of the pump.

[@lastknownlocation8760]

They might say The proof is in the pudding. But those in the know say (and we’ve been through this already,,,,,😂) The proof of the pudding is in the eating!

[@LockyourHubs4WDing]

Still!!!!! 😁

[@vlfreak]

Great testing and presentation again Simon, surprising result! The next installment will be interesting

[@LockyourHubs4WDing]

Hopefully all the work wasn't for nothing!

[@dbird29]

Eric @ SouthMainAuto has shown how to use the current clamp displaying on the O scope to see the relative compression on a car engine.

[@LockyourHubs4WDing]

Thanks, I'll have to check it out.

[@timdeneau6172]

I think because you increased the volume of the exhaust it slowed everything down. Air is funny, sharp angles will decrease velocity. Slowing down brakes and such. But since pressure is equal in all directions, more volume equates to increased time.

[@LockyourHubs4WDing]

You may be right!

[@2treekiller2]

I am really curious about whether your plumbing reduced the air heating up. I have a similar style compressor where the outlet tube gets that hot, I can barely hold it. I was thinking of doing similar plumbing to help reduce the heat...and maybe less airflow restrictions etc. Even debated about adding 12v cooling fan(s) lol.

[@LockyourHubs4WDing]

A fan is an interesting idea!

[@2treekiller2]

@@LockyourHubs4WDing With as much copper piping you have, that has to help some. I've even thought of using a short section of a pipe from a hot water baseboard heater, that has the fins on it. Then maybe have the fan blowing across it. The hard part is not making it too bulky.

[@crewzincool]

Love it . Keen for the next one. I noticed that big spike on the oscilloscope. Do you know how many amps it pulls for that spike when you first flick the switch. Cause my thumper is tripping my 200amp jk bms on my lithium battery

[@LockyourHubs4WDing]

I haven't particularly measured it.

[@einfelder8262]

Check the specs on your lithium battery - many of them can only deliver 50A

[@lexicase8805]

Go into your settings in the jk bms and change the short circuit protection delay up a bit. I had the same issue with my inverter tripping it out. Its not an overcurrent problem its simply the bms seeing a spike and going oh thats probably a short and shuts it down. I have mine set to 3000ųs and it now works perfectly. The jk bms is good for 200a continuously and 350 for a 5 sec burst, and the thumper certainly doesnt peak higher than that.

[@crewzincool]

@@lexicase8805 ok thanks mate I’ll have a look at the settings

[@LockyourHubs4WDing]

@@lexicase8805 from memory it was in the vicinity of about 250-260A, though didn't specifically measure it.

[@KurNorock]

I don't think you said, did you use the 1/2 pipe or the 3/8?

[@LockyourHubs4WDing]

1/2" copper pipe.

[@samajier2566]

Good

[@LockyourHubs4WDing]

Thanks!

[@ausguy4385]

Now please redo with equal length headers 😂 i want to see the improvement 😊 aftet getting to the end i wonder if its why. It's fighting itself

[@LockyourHubs4WDing]

I did think about pulse tuning, though if the original manifold is getting slightly better performance, I don't think it's that!

[@ausguy4385]

@@LockyourHubs4WDing it was equal length though was it not?

[@LockyourHubs4WDing]

@@ausguy4385 the manifold I made from copper? Not even close..... 😁

[@ausguy4385]

@@LockyourHubs4WDing no the original one?

[@LockyourHubs4WDing]

The outlet on the original manifold is biased to one side.

[@nathanielpulling]

You should have hooked it to a four-way tire inflator before your test. Your valve stem is your choke point. The compressor in stock forum already moves too much air for a standard Valve stem.

[@LockyourHubs4WDing]

All the subsequent tests with the modifications were without the Schrader valve inserted.

[@nathanielpulling]

@@LockyourHubs4WDing even without the Schrader valve installed the hole for the one Schrader valve can't flow enough air.

[@edge967]

Anyone else want to see this in a 2 stage compressor setup? I’m curious how it would compare to

[@LockyourHubs4WDing]

That would be interesting!

[@edge967]

@@LockyourHubs4WDing I’m curious cause I’m thinking of using this for onboard air with a tank @120psi so would it be more efficient running as a 2stage unit or standard is my interest.

[@LockyourHubs4WDing]

@@edge967 you shouldn't need a second stage for only 120 psi, a single stage will do that no issues

[@edge967]

@@LockyourHubs4WDing yes just thinking the 2stage might lower fill time?

[@mrpoopypants9586]

Great stuff and even better, not once did you call it soddering! It's a bit like a mate of mine who used to hot up Bellets. 🙂Cheers PP

[@LockyourHubs4WDing]

It's my Aussie upbringing! I solder, it's also spelt Aluminium! :)

[@Mencho22]

I didn't get why you did not choose a 1/2 pipe and instead you used a 3/8, if you want more CFM

[@LockyourHubs4WDing]

It's all about changes in velocity you want to minimize the Delta or the change in velocity is much as possible to keep the CFM up.

[@craigtomkinson2837]

Great work on the thumper, But I have to say you are turning a lovely compact unit into a monstrosity of a thing to use, sorry

[@LockyourHubs4WDing]

Just wait until I've finished! 😁

[@arronjohnston742]

that was very interesting, looking forward to the porting, and yes i know the porting will help depending on how far you go as i cheated🤣 and already seen something like this else where but no body tests like you test with all the toys......... if you were on the sunshine coast or near by i'd lend you my stock(for now) thumper max so you could easily show side by side differences....👍👍👍 ... ps, an issue the other guy had after porting etc was the reeds it'll be interesting to see if you have the same issue an how you fix them

[@LockyourHubs4WDing]

Which channel? I would be interested in having a look.

[@arronjohnston742]

@@LockyourHubs4WDing i believe you've seen the videos before as i brought it up before to which you said you'd seen it but he never tested like you test "dirt lifestyle" channel